Why not just swap the sim cards? I assume the rest of the plan features such as minutes etc are similar. If you don't wish to do that, you could change the rate plan for your #1 phone plan for one with a higher data option, and your #2 phone to one with a lower data option. The rest of the features should be pretty much the same. Koodo also has some nice promotional plans going on now which might even be a better bang for your buck compared to the plans you are currently on.